Abstract: The effects of three nitrogen forms, i.e. ammonium nitrogen, nitrate nitrogen, and amide nitrogen, on wheat dry matter accumulation and distribution after blooming were studied using random block experiment design. The results showed that after wheat blooming, with the growth process moving forward, the wheat grain dry weight and aboveground dry matter increased continually. However, the dry weight of flag leaf, peduncle and sheath below spike, and glume decreased continually during the same period. The results also showed that nitrogen forms have a significant effect on wheat dry matter accumulation and distribution after blooming. The total aboveground dry matter was highest under nitrate nitrogen treatment. And the distribution rate of dry matter in flag leaf, peduncle and sheath below spike, and glume was lowest and in grain was highest under nitrate nitrogen among three treatments. Meanwhile, the nitrogen forms have a great effect on wheat yield. The yield was 7575.3kg/hm2, 7250.5kg/hm2, and 7156.2 kg/hm2 under the treatment of nitrate nitrogen, ammonium nitrogen, and amide nitrogen, respectively. In this study, application nitrate nitrogen fertilizer had the finest effort on yield and had an increase by 5.8% in wheat yield than that under amide nitrogen treatment.